Log Message:
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Adding a Flex Builder Flash-Integration and Utilities project to make these files easier for people to work on. Flash-Integration is really an intermediate swc that Utilities uses. I've also modified the existing Flex Builder project for flex4tests to build against this new utilities project directly.

Also change the way FlashIntegration is built--we no longer have a manifest file and just include-classes FlashIntegrationClasses.as.